How to Improve Email Open Rates: 12 Proven Tactics

Staring at disappointing open rate numbers is frustrating. You craft emails you’re proud of, but they sit unopened in inboxes, gathering digital dust. The good news? Open rates are one of the more fixable email metrics. Here are twelve tactics that actually move the needle.

1. Write Subject Lines That Spark Curiosity

Your subject line is the only thing standing between your email and the trash folder. Generic subjects like “June Newsletter” tell readers nothing interesting is inside. Specific subjects like “The email mistake that cost me $4,000” create a gap between what they know and what they want to know.

Questions work particularly well—”Are you making this common pricing mistake?”—because the brain automatically tries to answer them, pulling readers toward opening.

2. Nail Your Preview Text

The preview text (preheader) is the text that appears after your subject line in most inboxes. If you don’t set it intentionally, email clients pull the first text from your email, which might be “Having trouble viewing this email?” or other useless boilerplate.

Use preview text to extend your subject line’s promise: Subject “The email mistake that cost me $4,000” with preview “And how to make sure it doesn’t happen to you.”

3. Send From a Real Person

Emails from “John at Company” get opened more than emails from “Company Newsletter” or worse, “noreply@company.com.”

People open emails from people. Use a recognizable name, ideally someone your subscribers might actually interact with. Even large companies see better results when the CEO or a specific team member is the sender.

4. Find Your Optimal Send Time

There’s no universal best time to send emails. What works for a B2B audience (Tuesday morning, business hours) differs from B2C (evenings and weekends when people have leisure time).

Test different times and track your results. Most email platforms including Brevo offer send-time optimization features that learn when your specific subscribers are most likely to engage.

5. Segment Your List

Sending the same email to everyone hurts your overall open rates because not everyone cares about everything you send.

Basic segmentation: separate by engagement level. Your most engaged subscribers should receive different content (or frequency) than people who rarely open. Tailor content to interests when possible—someone who only bought running shoes doesn’t need emails about hiking boots.

6. Clean Your List Regularly

Inactive subscribers drag down your average open rate mathematically. They also harm deliverability, making it harder for your emails to reach engaged subscribers.

Remove hard bounces immediately. Run re-engagement campaigns for inactive subscribers quarterly, and remove those who don’t respond.

7. Establish Consistent Sending Patterns

Subscribers develop expectations. If they know your Tuesday tips email arrives every week, they look for it. Random sending schedules make it harder for subscribers to anticipate and prioritize your emails.

Pick a cadence you can maintain and stick to it. Consistency builds habit.

8. Deliver on Your Promises

If your subject line promises “3 quick tips” and your email is a 2000-word essay, you’ve broken trust. If your welcome email said you’d send weekly and you email daily, you’ve broken trust.

Broken trust leads to subscribers training themselves to ignore you. Deliver exactly what you promise, and people learn to open your emails because they know they’ll get value.

9. Optimize for Mobile

Over half of emails are opened on mobile devices. Long subject lines get cut off. Dense paragraphs are hard to read. Links too close together cause mis-taps.

Keep subject lines under 40 characters if possible. Use short paragraphs and plenty of whitespace. Make buttons and links easy to tap.

10. A/B Test Continuously

Never stop testing. Test subject line approaches: questions vs. statements, short vs. long, with emoji vs. without. Test sender names. Test send times.

Small improvements compound over time. A 5% improvement from better subject lines plus 5% from better timing plus 5% from list cleaning adds up significantly.

11. Re-engage Before They Go Cold

Watch for subscribers whose engagement is declining. Someone who opened every email last month but hasn’t opened one in three weeks is at risk of going completely inactive.

Target declining engagers with special content or offers before they fully disengage. It’s easier to keep someone engaged than to re-activate someone who’s gone cold.

12. Authenticate Your Domain

Email authentication (SPF, DKIM, DMARC) tells inbox providers you’re legitimate. Without proper authentication, your emails are more likely to land in spam folders—and you can’t get opens from spam.

Most email platforms guide you through authentication setup. It’s technical but essential. Do it once and benefit forever.

Improving Takes Time

Don’t expect overnight transformation. Open rates improve through consistent effort—better subject lines over time, cleaner lists over time, stronger sender reputation over time.

Track your metrics monthly. Look for trends rather than obsessing over individual sends. Steady improvement over months matters more than perfect numbers on any single email.